Theater-chair



(No Model.)

H. J. HARWOOD. THEATER CHAIR.

THE NORRIS Perms c0), wowumo msumcrum n. c

UNITED STATES PATENT QFFI E.

HERBERT JOSEPH HARlVOOD, OF LITTLETON, MASSACHUSETTS.

TH EATER-C HAIR.

SPECIFICATION forming part of Letters Patent No. 426,533, dated April29, 1890.

Application filed November 25, 1839- Serial No. 331,519. (No model.)

T0 aZZ whom it may concern.-

Be it known that 1, HERBERT JOSEPH HAR- WOOD, a citizen of the UnitedStates, residing at Littleton, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inTheater- Chairs; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and .to the letters of referencemarked thereon, which form apart of this specification.

Figure 1 is a front elevation of a chair enibodying the invention. Fig.2 is a vertical transverse section. Fig. is an enlarged detail sectionon line 3 3, Fig. 2, looking in the direction of the arrow. Fig. 4 is aperspective view of the back-support, the standard being removed, andalso the bolt and nut. Fig.5 is a vertical section of 4., taken throughthe pivot-bolt, having the standard and bolt added to it. Fig. 6 is aperspective view of the inside of the seat half of the seatsupportingsocket, and Fig. 7 is a similar view of the standard half of the samesocket. Fig. 8 is a side view of the hanger.

This invention relates to an improvement in opera-chairs, or that kindof chair in which the seat tilts and the back swings.

The invention consists in the construction hereinafter pointed out.

In the annexed drawings, the letters A A indicate the usualseat-supporting standards having the usual arm-rests B B. At theproper'height to hold the seat these standards are provided with. thehalf-sockets a a.

These sockets have the circular rims a a,

and within the lugs to a a. The lugs a a are opposite each other 011 thesame diameter, and the lug a is at right angles to them. These lugs arespaced at a away from the rim to a sufficient distance to admit the rimof the other half-socket on the seat. Within these lugs is the orifice(1, of the standard half of the socket.

Secured to the sidesc c of the seat 0 are castings E E. These castings EE are made with half-sockets e e, which are the fellow sockets of thestandard half-sockets a, at.

These half-sockets e e have circular rims e 6', adapted to fit withinthe rim a of the halfsockets a a.

- XVithin the half-sockets e c are the two lugs 6 6 at opposite ends, ofthe same diameter. The location of the lugs e c is such that when thehalf-sockets c and a are fitted together these lugs c 6 will bearagainst the lugs to a when the seat C isdown, and one lug e will bearagainst the lug a when the seat 0 is up. These half-sockets are puttogether by inserting the half-sockets c a into the half-sockets (Z a. Atrunnion or bushing a is slipped through the sockets, its head a bearingagainst the inside of the casting E. This bushing has the recess 6, intowhich is inserted a spring-washer e, and a bore through which a bolt 6is put and held by a nut e as shown in Fig. 3. These castings E E extendto the rear, and are provided with the lugs f f, which extend inwardly,as shown. These lugs ff fit into and engage curved slot-s f f, made inthe lower curved ends f f of castings F F, which are secured to thesides g g of the back G. Near their tops g g these castings F F havestuds h h, which extend outwardly, and have noses h h, which extendrearwardly, as shown in Fig. 4. These studs h 7t pass through slots 7o7; of hangers K K. These slots Zr 71; have a curve necessary to permitthe proper swing of the back. hangers K K are preferably made with bends7t 7t, and have at their lower ends the holes k Passing through theseholes k 7o are the bushings L L. These bushings have the flanges Z Z,which bear against the inner faces of the hangers K K, the circularbearing Z Z, which fits the holes k 15 and smaller square orpolygonalbearings Z Z at theircnds, there being shoulders Z Z betweenthe bearings. These bushings have the bores Z' Z, and at their largerends the concavities Z Z", about which are the square or polygonal seatsZ Z. Adapted to the square or polygonal bearings Z Z of these bushings LL are square or polygonal openings m m in the standards A A. Passingthrough these standards centrally of these openings on m are thebores 'mm, and outside of the standards A. A are nut-seats m m Placed on theseats Z Z are the spring- Through plates N N, having the holes at at.

These these plates and the bushingsL L pass the bolts P P, the nuts 19 pof which rest in the seats m By the construction described is produced achair which is of few parts and simple and yet easily operated. The seattilts on the sockets at its edges, and through the connection with theback the latter is swung upon the hangers, by which it is held to thestandards. The spring-plates e and N not only form tight connections,but they give a yielding action to the joints, which renders theirmanipulation easy. Of course it is understood that these chairs are tobe placed in rows in the usual manner. Only the construction of a singlechair needs description, as all the others are duplications. In puttingthem together in rows, a standard between two chairs being common toboth, the construction on each side of such standard is to be the same.

Having described my invention, what I claim is- I 1. The combination ofthe standards, the seat pivoted thereto, and the studs extending outtransversely therefrom at the rear, the

backhaving the dependent arms with the curved slots into which thesestuds fit, the back-studs having noses, and the slotted hangersconnected to the back and to the standard, as set forth.

2. The combination of the back G, having the studs h, with their nosesh, the hangers K, having the slots 70 for the reception of the studs hand holes $4 the bushings L and standards A A, having the recesses m forthe reception of the end of the bushing L, and the bolts P, whereby allthe parts are held in place, as set forth.

3. The combination of the standards, the seat secured thereto by thebushings, lugs, and bolts, the studs extending out at rear, the backhaving the arms with curved slots, into which these studs fit, theback-studs having thenoses, and the slotted hangers pivoted to thestandards and connected to the back by these studs having noses, as setforth.

In testimony whereof I affix my signature in presence of two witnesses.

HERBERT JOSEPH HARXVOOD.

WVitnesses:

ALBERT G. Y. MAcADAM, II. E. BOTHFELD.

